反应详情

A mixture of 4-(((3S,4S)-4-ethylpyrrolidin-3-yl)amino)-6-(6-((2-methoxyacetamido)methyl)pyridin-3-yl)pyrrolo[1,2-b]pyridazine-3-carboxamide, 2hydroiodide (30 mg, 0.042 mmol), 2-cyano-2-methylpropanoic acid (14.39 mg, 0.127 mmol), BOP (56.3 mg, 0.127 mmol) and Hunig's Base (0.052 mL, 0.297 mmol) in DMF (0.25 mL) was stirred at rt for 2 hr. The reaction mixture was purified via preparative LC/MS with the following conditions: Column: Waters XBridge C18, 19×150 mm, 5-μm particles; Guard Column: Waters XBridge C18, 19×10 mm, 5-μm particles; Mobile Phase A: 5:95 acetonitrile:water with 10-mM ammonium acetate; Mobile Phase B: 95:5 acetonitrile:water with 10-mM ammonium acetate; Gradient: 5-100% B over 15 minutes, then a 5-minute hold at 100% B; Flow: 20 mL/min. Fractions containing the desired product were combined and dried via centrifugal evaporation to afford the title compound (6 mg, 0.011 mmol, 26% yield). 1H NMR (500 MHz, METHANOL-d4) δ 8.79 (dd, J=9.4, 2.0 Hz, 1H), 8.14 (d, J=5.0 Hz, 1H), 8.06-7.93 (m, 2H), 7.38 (dd, J=8.2, 3.2 Hz, 1H), 7.20-7.10 (m, 1H), 5.07-4.87 (m, 1H), 4.57 (s, 2H), 4.36-4.14 (m, 2H), 3.97 (s, 2H), 3.95-3.68 (m, 2H), 3.46 (s, 3H), 2.68-2.44 (m, 1H), 1.83-1.39 (m, 8H), 1.07-0.95 (m, 3H). MS (ES+) m/z: 547.1 (M+H); LC retention time: 1.19 min (analytical LCMS Method H).

1. customThe reaction mixture was purified via preparative LC/MS with the following conditions
2. waitGradient: 5-100% B over 15 minutes
3. customa 5-minute hold
4. additionFractions containing the desired product
5. customdried via centrifugal evaporation